An extra Aria infant car seat base allows you flexibility and ease of travel. Ideal for multiple family vehicles – no more swapping car seat bases between relatives, babysitters or spouses! load leg for additional stability and energy absorption Anti-Rebound+ Panel for increased safety in rebound & rear-impact collisions built-in lock off for secure seatbelt installation bubble level indicators on both sides to aid in getting correct angle during installation. Specific angle for the infant inlay range. SmartSecure® System with red-to-green visual indicator accurately installs in seconds Specifications Child Fit Requirements: 4 - 22lbs (1.8 - 10 kg) Dimensions (in): 23.9 L x 14.4 W x 16.21 H (60.6 L x 14.4 W x 16.2 H cm) Product Weight: 27.2lbs (12.3 kg) Materials: 65% plastic & 35% metal Care Instructions: Wipe clean with a damp cloth